Spring-wheel.



G. HARDE-T.

SPRING WHEEL. APPLICATION FILED Nov.1s,19o5.

l PATENTED JUNE 12, 1906.

ITED STATES PATENT OFFICE.

Specification of Letters Patent.

l atenten June 12, 1996.

` Application illed November 13,195. Serial No. 287,124.

To (tZ whom it may eartcernf,

Be it known that I, GEORGETTE BARDET, @wie Bom) independent lady, a citizen of the .Republic of France, residing at St.-Leu-Tav erny, Rue de Boissy, Seineet-Oise,-in the Republic oi' France, have invented certain' new and useful lm rovements inl Elastic or Spring Vlfheels for chicles, of which the following is a specification.

This invention relates to a Wheel havin an pins or other suitable roections fixed to the rigid part of the w ee These pins are freely engaged in the portions of the corru. gatioiis which have their concavities turned toward the exteriorv and form a kind of teeth engaging' with those of the strip, While allowing t e iii'erent parts of -the latter to move toward the center of the Wheel without meeting with any rigid obstacle. A suicient lengthci' this strip can be deflected at once, un er a strain exerted at an point, so that the tire possesses greatiiexi'bllity, and lconsequently runs with great ease. On the other hand, although 'the strip is'very free in a radial direction it can be supported at numerous points in the direction of the eriphei'y so that it is compelled to turn with) the rigld portion of the Wheel. Insteadof-a. single strip several strips-can of course be employed arranged and operating under the same conditions.

To enable my invention to be fully understood, l will describe how it can be carried into ractice by reference to the accompanying rawings, in Which- Figure l is a vertical section of an elastic or spring wheel constructed according to my invention. Figs. 2 and 3 are vertical sections, taken at right angles to each other and drawn to a larger scale, of a portion of the tire; and Figs 4 and 5 are transverse. sections of modiiications of the tire.

lhe eiastic or spring portion of the tire, Figs. l to 3, consists o a corrugated springstrip l, extending over the entire periphery of the wheel.. This strip isf preferably continuous-that is to say, endless. Nevertheless, ii' required, the continuity may be interrupted at one or more points.

2 and 3 indicate bands of flexibley material,

such as leather, whichl form a tread around 1 the strip 1. Pro'ections 4, engaging theprojectionso thecorrugationso the strip, are formed on this tread and prevent its longitudinal dis lacement. An suitable means may be emp oyed for'attac 'ng the iiexible bands over the spring-strip.

The rigid portion of the wheel may be of any suitable construction, .comprises'two parallel chee or sides 5 and 6, supporting the strip l transversely, and the pms 7 en aging in the corrugations of the said strip. fn. the form illustrated in Figs. 1 t0 3 the' cheek 5 is formed with a metal rin 10, 4fined over thewooden rim 8 of a Whee having rigid spokei). The other cheek 6 is xed to a'iange on the ring 10, so that it can beprernoved Vfor facilitating the placing of the striv 41 position. e pins 7 are shown in the form oftiebars ixed to the cheeks 5 and 6. They may, however, consist .of simple rejections formed 0,1' ligxed Qn each cheek. heir number is preferably equal to that of the corrugations of the strip. They can, however, be

third or other corruglation. The essential condition is to place t e pins in the parts 11 of the' corrugations which have their conthestrip may be freely defiected between the ,cheeks 5 and 6 toward the center of the wheel. To this end the space between the ins 7 and the ring 10 must be of such a depth that the strip will not meet any rigid su o'rt whendisplaced toward the center,

en a load 1s borne by the Wheel, the lower part of the s ringt1re becomes attened and more or ess pressed'up between the cheeks 5 and 6. The lateral and upper parts cannot become dis laced upwardly withrelationto the ins 7; ut the lower part is free to become eflected over a fairly eX- tensive arc Aof a circle, so that it ossesses great elasticity. ,An elastic tire o this description also presents considerable resistanceto torsional strains-that is to say, it is little advantage that it may be broken at any point without being rendered unservlceable,

merous and close together.

, may be placed in position withoutA any inibetween rovided that it placed in alternate corrugations or in every,I

cavities turned toward outward in order thaty liable to become buckled. It possesses the,

especially when the pinsv 7 are relativelynutial tension, the de tlecting portion is of con.-

sideratble andconstant length Whatever may be the position ci the wheel, the elasticity equal et all points ol the circumference or i the wheel, since the strip is oi the same section throughout end does not requlreto be. perl'orsted anywhere nor` otherwise weakcned, the deformations causedy by. obstacles,

es by even `ground, nre ulwcys normal to the periphery, the tangential drawing' of the tire by the rim. takes place over a large part oll the circlnnfcrence, and the tire has e veryhigh transverse section, While being very elastic,v

so that security :is regards the resistance of the strip is es greet es possible.

In order toprevent noise, the pins 7 may be mede of aiY non-sonorous nnrtorial or they may be covered with :t sheath l2 which will deaden Vibrations. The inner feces of the cheeks 5 and 6 muy also be provided with linings 13 of liber or other materiel, which Will prevent my noisy metallic contact Fig. 4 shows a tire buying two strips 1` l portions of which are holes 19 for tlfe 'leather easing, the vertical edges 17 of which can slide along the innersides of the lateral, cheeks of the rim.

In Fig. 5 tive strips 1 are placed side by side. They are completely inclosed in e cesing .18, of leather or other materiel, the side perforated with radial passage oi' the pins 7, (Not shown.) The strips 1 and lexible jacket 18 are together placed in a, holi 'iw riln similar to that shown 'in Fig. 3 and can nieve radially therein,V being guided by the pins 7 which slide in the apertures 19.

' In e Wheel having en elastic tire, the eo1nbination of n, hollovT felly having two lateral cheeks und e median rib whiclrform en i? shaped 'cross-seotion,` pins secured to the medien rib7 and two unduloted elastic rims the inner loops of which pass-round the seidpins and are capable of nlovinfr freely in* Ward towsrd'the-bottom of the telly While the outer loops can slide freely between the said pins.l ,Y y

In testimony that Icleinl the foregoing es my invention I have signed. my naine in presence of two subscribing Witnesses GEORGE/FTE BARDET.

Witnesses: l

CAMILLE BL'rRY, F. W. CAULDWELL. 

